Riveting-tool.



' G. DETWILER.

RIVETING TOOL.

- APPLICATION FILED 33.17, 1913.

Patented June 16, 1914.

a "MK Mi/68888? I U'LYSSES DET'WILER, 0F VEBONA, PENNSYLVANIA.

BIVETING-TOOL.

Specification of Letters Patent.

Patented June 16, 1914.

Application filed February 17, 1918. Serial No. 748,959.

To all whom it may concern:

Be it known that I, ULYssEs G. Dn'rwninn, av citizen of the United States, residing at Verona, in the county of Allegheny and State .of Pennsylvania, have invented oert-ain new and useful Improvements in Riveting-Tools, of which the following is a specification.

My invention consists of an improvement in riveting tools and has for its object to provide a backing or resisting tool for the rivet being headed, so constructed as to absorb the shock of impact of the blows, while enabling the resisting tool to be continuously maintained against the head of the rivet.

The tool comprises a holding handle or stem portion, a relatively movable anvil portion, an intervening cushion device, and a retaining key, constructed and adapted to operate in the manner more fully herein after described.

In the drawings illustrating one preferred form of the invention-Figure 1 is a view in side elevation, partlybroken away, showing the tool in normal position for operation.. Fig. 2 is a cross sectional view on the line H. II. of Fig. 1. Fig. 3 is a partial longitudinal sectional view showing a modi fied form of cushion. Fig. 4 is a sectional view, similar to Fig. 2, showing the key in partly released position.

My improved tool is adapted to be held by the hand of the workman against the head of the rivet, to resist the blows by the riveting or swaging tool at the other end, as will be readily understood. Ordinarily, especially where pneumatic riveters are used, such blows are rapid and continuous,'resulting in a constant jar or series of shocks, together with resulting noise.

My invention is designed to reduce these objections to a minimum.

To this end it consists of a holding frame or main stem portion 2, preferably cylindrical in shape, the front portion of which is hollow, providing a cylindrical cavity within an extended shell 3. A handle 4 extends backwardly from the stem, of any suitable design or shape as desired.

The anvil 5 is provided with a recess 6 at its end and a rear cylindrical shank portion '7 extending inwardly of the cylindrical casing 3 and abutting against a resilient cushion 8 of rubber or other suitable material, an intervening metal washer 9 being preferably employed to receive the impact of the rear end of anvil shank and protecting the cushion 8. These parts are preferably provided with central openings or holes 10, 11, respectively for facilitating the insertion of a removing tool of any suitable construction, as will be readily understood.

The body portion of the shank 7 between Its inner end and the anvil head 5 is annul-arly recessed, as at 12, providing the reduced neck portion between terminal shoulders 13, 13.

The casing or shell 3 is apertured as at 14 and 15, and adapted to receive the terminal 16 of the holding key 17 at one side and the inwardly projecting extension'18 of the key at the other side, for the purpose of retainin the shank 7 within the casing.

Key 1 which may be of wire, is provided with a finger terminal 19 and is sufliciently resilient to spring inwardl shown in Fig. 2, and to be removed when it is desired to withdraw the shank for re newal of the cushion, or for changing to another anvil for a difi'erent'size rivet head.

The recess 12 between the shoulders 13 is of suflicient length to provide for ample longitudinal movement of the anvil member lyyaithin the cushioning capacity of the mem- In Fig. 3 the construction is the same as above described except that the cushioning element is made of a helical spring 8 of any desired strength.

The construction and operation of the invention will be readily understood and appreciated from the foregoing description.

It may be of any desirable size, dimensions and proportions as to the size of the rivets being operated upon, or may be changed in y to the position other features or details by the skilled mechanic, but all such changes are to be considered as within the scope of the followin claims.

at I claim is:

1. In a riveting tool, the combination with a handle portion consistin of a. cylindrical shell having oppositely ocated openings therethrough and a rear holding grip, and provided with a resilient cushionin device at the inner portion of the shell, 0 a. onepiece freely rotatable anvil portion extending inwardly of the shell provided with an annular neck and limit' shoulders at each end thereof forming a ey cavity, and a. resilient holding key embracing one side of the shell having an inwardly turned terminal passing through one of the shell open- -ings and into the key cavity and bent inwardly at the other -end for the same purpose and then formed into a rounded finger terminal, substantially as set forth.

2. In a riveting tool, the combination of a cylindrical shell having a holding grip, an inner bearing portion, and oppositely located openings through the shell, a resilient cushion seating against the inner bearing v portion, a freely rotatable anvil portion seating against the cushion and provided with an elongated annular recess or neck having terminal annular shoulders, and a half ULYSSES G. DETVVILER.

lVitnesses C. M. CLARKE, FREDIL. STAUB. 

